What is difference between 'protocol' and 'delegate'?

811

---

What manual memory management ? How it work?

842

---

What is 'notification'?

824

---

How to download something from the internet?

830

---

What happens if the methods doesn’t exist?

857

---

What is latest xcode version?

842

---

What is meaning of 'atomic' keyword?

858

---

Difference between sax parser and dom parser ?

851

---

What is use of uiapplication class?

831

---

What is 'private', 'protected' and 'public' ?

946

---

What is synchronized() block in objective c? What is the use of that?

821

---

how push notification works?

840

---

What is difference between 'assign' and 'retain' keyword?

811

---

Procedure to push the app in appstore?

837

---

What are the application lifecycle in ios?

834

---